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Titolo:
Reactions of LiE(SiMe3)(3), E = Si, Ge: X-ray crystal structure of the cyclotetrastannane [ClSnSi(SiMe3)(3)](4)
Autore:
Mallela, SP; Saar, Y; Hill, S; Geanangel, RA;
Indirizzi:
Univ Houston, Dept Chem, Houston, TX 77204 USA Univ Houston Houston TX USA 77204 uston, Dept Chem, Houston, TX 77204 USA
Titolo Testata:
INORGANIC CHEMISTRY
fascicolo: 12, volume: 38, anno: 1999,
pagine: 2957 - 2960
SICI:
0020-1669(19990614)38:12<2957:ROLE=S>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
TRIS(TRIMETHYLSILYL)SILYL DERIVATIVES; SN; RING; TIN; PB;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Geanangel, RA Univ Houston, Dept Chem, Univ Pk, Houston, TX 77204 USA UnivHouston Univ Pk Houston TX USA 77204 ston, TX 77204 USA
Citazione:
S.P. Mallela et al., "Reactions of LiE(SiMe3)(3), E = Si, Ge: X-ray crystal structure of the cyclotetrastannane [ClSnSi(SiMe3)(3)](4)", INORG CHEM, 38(12), 1999, pp. 2957-2960

Abstract

Reaction of SnCl2. dioxane with 2 equiv of Li(THF)(3)Si(SiMe3)(3) in hexane afforded the cyclotetrastannane [(Me3Si)(3)SiSnCl](4) in reasonable yield. From pentane, the product crystallized as a red-orange disolvate in the P(1) over bar space group (triclinic) with a = 14.735(2) Angstrom, b = 14.976(2) Angstrom, c = 24.066(3) Angstrom, alpha = 76.94 degrees, beta = 76.19degrees, gamma = 62.11 degrees, V = 4517.5 Angstrom(3), and Z = 2. The Sn-4 ring consisted of a slightly distorted, nonplanar (fold angle = 18.9 degrees) rectangle with Sn-Sn distances of 2.8054(6), 2.8111(6), 2.9122(6), and2.9146(6) Angstrom. The pentane molecules were disordered. Selected mono- and dihalogermanes were treated with 1 equiv of Li(THF)3Si(SiMe3)3 or Li(THF)(2.5)Ge(SiMe3)(3), affording (Me3Si)(3)EGe(CF3)(3) (E = Si, Ge) and (Me3Si)(3)GeGeR3 (R = Cl, CH3, C6H5). Besides the monosubstitution product, the reaction of GeCl4 with 1 equiv of Li(THF)(2.5)Ge(SiMe3)3 also gave a small amount of the linear tetragermane (Me3Si)(3)GeGeCl2GeCl2Ge(SiMe3)(3). Good yields of the analogous phenyl derivative, (Me3Si)(3)GeGePh2GePh2Ge(SiMe3)(3), were obtained by treating Ph2GeCl2 with 2 equiv of the lithium-germyl reagent.

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Documento generato il 02/12/20 alle ore 15:29:39